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[ aws . ec2 ]

modify-vpc-peering-connection-options

Description

Modifies the VPC peering connection options on one side of a VPC peering connection. You can do the following:

  • Enable/disable communication over the peering connection between an EC2-Classic instance that's linked to your VPC (using ClassicLink) and instances in the peer VPC.
  • Enable/disable communication over the peering connection between instances in your VPC and an EC2-Classic instance that's linked to the peer VPC.
  • Enable/disable the ability to resolve public DNS hostnames to private IP addresses when queried from instances in the peer VPC.

If the peered VPCs are in the same AWS account, you can enable DNS resolution for queries from the local VPC. This ensures that queries from the local VPC resolve to private IP addresses in the peer VPC. This option is not available if the peered VPCs are in different AWS accounts or different regions. For peered VPCs in different AWS accounts, each AWS account owner must initiate a separate request to modify the peering connection options. For inter-region peering connections, you must use the region for the requester VPC to modify the requester VPC peering options and the region for the accepter VPC to modify the accepter VPC peering options. To verify which VPCs are the accepter and the requester for a VPC peering connection, use the DescribeVpcPeeringConnections command.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

Synopsis

  modify-vpc-peering-connection-options
[--accepter-peering-connection-options <value>]
[--dry-run | --no-dry-run]
[--requester-peering-connection-options <value>]
--vpc-peering-connection-id <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Options

--accepter-peering-connection-options (structure)

The VPC peering connection options for the accepter VPC.

Shorthand Syntax:

AllowDnsResolutionFromRemoteVpc=boolean,AllowEgressFromLocalClassicLinkToRemoteVpc=boolean,AllowEgressFromLocalVpcToRemoteClassicLink=boolean

JSON Syntax:

{
  "AllowDnsResolutionFromRemoteVpc": true|false,
  "AllowEgressFromLocalClassicLinkToRemoteVpc": true|false,
  "AllowEgressFromLocalVpcToRemoteClassicLink": true|false
}

--dry-run | --no-dry-run (boolean)

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

--requester-peering-connection-options (structure)

The VPC peering connection options for the requester VPC.

Shorthand Syntax:

AllowDnsResolutionFromRemoteVpc=boolean,AllowEgressFromLocalClassicLinkToRemoteVpc=boolean,AllowEgressFromLocalVpcToRemoteClassicLink=boolean

JSON Syntax:

{
  "AllowDnsResolutionFromRemoteVpc": true|false,
  "AllowEgressFromLocalClassicLinkToRemoteVpc": true|false,
  "AllowEgressFromLocalVpcToRemoteClassicLink": true|false
}

--vpc-peering-connection-id (string)

The ID of the VPC peering connection.

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

To enable communication over a VPC peering connection from your local ClassicLink connection

In this example, for peering connection pcx-aaaabbb, the owner of the requester VPC modifies the VPC peering connection options to enable a local ClassicLink connection to communicate with the peer VPC.

Command:

aws ec2 modify-vpc-peering-connection-options --vpc-peering-connection-id pcx-aaaabbbb --requester-peering-connection-options AllowEgressFromLocalClassicLinkToRemoteVpc=true

Output:

{
  "RequesterPeeringConnectionOptions": {
      "AllowEgressFromLocalClassicLinkToRemoteVpc": true
  }
}

To enable communication over a VPC peering connection from your local VPC to a remote ClassicLink connection

In this example, the owner of the accepter VPC modifies the VPC peering connection options to enable the local VPC to communicate with the ClassicLink connection in the peer VPC.

Command:

aws ec2 modify-vpc-peering-connection-options --vpc-peering-connection-id pcx-aaaabbbb --accepter-peering-connection-options AllowEgressFromLocalVpcToRemoteClassicLink=true

Output:

{
  "AccepterPeeringConnectionOptions": {
    "AllowEgressFromLocalVpcToRemoteClassicLink": true
  }
}

To enable DNS resolution support for the VPC peering connection

In this example, the owner of the requester VPC modifies the VPC peering connection options for pcx-aaaabbbb to enable the local VPC to resolve public DNS hostnames to private IP addresses when queried from instances in the peer VPC.

Command:

aws ec2 modify-vpc-peering-connection-options --vpc-peering-connection-id pcx-aaaabbbb --requester-peering-connection-options AllowDnsResolutionFromRemoteVpc=true

Output:

{
  "RequesterPeeringConnectionOptions": {
      "AllowDnsResolutionFromRemoteVpc": true
  }
}

Output

AccepterPeeringConnectionOptions -> (structure)

Information about the VPC peering connection options for the accepter VPC.

AllowDnsResolutionFromRemoteVpc -> (boolean)

If true, the public DNS hostnames of instances in the specified VPC resolve to private IP addresses when queried from instances in the peer VPC.

AllowEgressFromLocalClassicLinkToRemoteVpc -> (boolean)

If true, enables outbound communication from an EC2-Classic instance that's linked to a local VPC using ClassicLink to instances in a peer VPC.

AllowEgressFromLocalVpcToRemoteClassicLink -> (boolean)

If true, enables outbound communication from instances in a local VPC to an EC2-Classic instance that's linked to a peer VPC using ClassicLink.

RequesterPeeringConnectionOptions -> (structure)

Information about the VPC peering connection options for the requester VPC.

AllowDnsResolutionFromRemoteVpc -> (boolean)

If true, the public DNS hostnames of instances in the specified VPC resolve to private IP addresses when queried from instances in the peer VPC.

AllowEgressFromLocalClassicLinkToRemoteVpc -> (boolean)

If true, enables outbound communication from an EC2-Classic instance that's linked to a local VPC using ClassicLink to instances in a peer VPC.

AllowEgressFromLocalVpcToRemoteClassicLink -> (boolean)

If true, enables outbound communication from instances in a local VPC to an EC2-Classic instance that's linked to a peer VPC using ClassicLink.